TITLE OF STUDY: Twins’ Interactions with Parents and Peers

PRINCIPAL INVESTIGATOR: Riley Marshall, M.S.

ADVISOR: Dr. Lisabeth DiLalla, Professor, Family & Community Medicine; Population Science and Policy; and School of Psychological and Behavioral Sciences, Southern Illinois University; Director: Southern Illinois Twins/Triplets and Siblings Study (SITSS)

PARTICIPANTS NEEDED: Same-sex twins between the ages of 7 and 10 years

LOCATION: Anywhere in the United States, Entire Multiples of America membership

PURPOSE OF STUDY: In this study, the researcher seeks to learn more about the interactions of twins with parents and peers.

METHOD OF INVESTIGATION: Parent participants will complete an online survey, which takes about 60 minutes. Children participants will be interviewed using a brief questionnaire over Zoom. The Zoom interview takes 45-60 minutes and can be completed after school, on school holidays or on weekends.

Each participating family will receive a $20. Amazon gift card and each child will receive a book. All participating families will also be entered into a drawing for the chance to win prizes.

SPONSORING INSTITUTION: Southern Illinois University

INITIATION DATE: March 2023

COMPLETION DATE: Open-ended.

FOR MORE INFORMATION OR TO VOLUNTEER TO JOIN THE STUDY, EMAIL DR. DILALLA: sitss@siu.edu  or call (618) 453-2371